CVE-2021-35223

Execute Command Function Allows Remote Code Execution (RCE)Vulnerability

Description

The Serv-U File Server allows for events such as user login failures to be audited by executing a command. This command can be supplied with parameters that can take the form of user string variables, allowing remote code execution.

Remediation

Solution:

  • SolarWinds recommends customers upgrade to the latest version of the product as soon as possible. Upgrading the software will remediate this vulnerability.

Workaround:

  • If you are unable to upgrade immediately. See SolarWinds Knowledgebase Article Below: https://support.solarwinds.com/SuccessCenter/s/article/Execute-Command-Function-Allows-Remote-Code-Execution-RCE-Vulnerability-CVE-2021-35223?language=en_US

Category

8.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 4.51% Top 15%
Vendor Advisory solarwinds.com Vendor Advisory solarwinds.com Vendor Advisory solarwinds.com
Affected: SolarWinds Serv-U
Published at:
Updated at:

References

Link Tags
https://support.solarwinds.com/SuccessCenter/s/article/Execute-Command-Function-Allows-Remote-Code-Execution-RCE-Vulnerability-CVE-2021-35223?language=en_US vendor advisory
https://documentation.solarwinds.com/en/success_center/servu/content/release_notes/servu_15-2-4_release_notes.htm release notes vendor advisory
https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35223 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-35223?
CVE-2021-35223 has been scored as a high severity vulnerability.
How to fix CVE-2021-35223?
To fix CVE-2021-35223: SolarWinds recommends customers upgrade to the latest version of the product as soon as possible. Upgrading the software will remediate this vulnerability.
Is CVE-2021-35223 being actively exploited in the wild?
It is possible that CVE-2021-35223 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~5% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-35223?
CVE-2021-35223 affects SolarWinds Serv-U.
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